Question

Find the missing term in the ap 2___ 22

Answer 1

Answer:

a 2

ap

22

ap= a (n-1) d

22= 2+ ( 3-1) d

20 =2d

10= d

a+d

2+10= 12 answer

Answer 2

Answer:

Given,

First term (a) = 2

Number of terms (n) = 3

Last term (an) = 22

We know that,

an = a + ( n - 1 ) d

22 = 2 + ( 3 - 1 ) d

22 = 2 + 2d

2d = 20

d = 10

Hence,

The missing term (a2)

= a + d

= 2 + 10

= 12